Composition of matter for use in sealing cracks in metal structures



106. COMPOSITIONS,

heads and the like,

COATING OR PLASTIC.

sass m; 1'9, i932 UNITED STA t'ross Reference TESV; PATENT OFFICE JOHN FREDERICK CUMMING AND WILLIAM I. EKLUN'D, OF MORRIS, MHINESOTA COMPOSITION or ntA'rrEB. FOB nsn m snnnme CRACKS m mErALs'rnUc'rUaEs No Drawing.

This invention relates to a composition of matter designed primarily for sealing and permanently repairing cracks which have been formed in cylinder blocks, cylinder whether; the cracks be internal or external.

The composition consists of the following ingredients substantially the proportions stated, namely:

Per cent by volume Sodium or potassium silicate 95 Petroleum carbon black 4 Oil of bergamot 2 In practice if a motor is to be repaired it must first be cold. The water contained in the cooling system is drained from the radi-v ator and the engine is then started. Immediately thereafter the radiator is supplied with water or with a suitable antifreeze solution until the radiator is within approximately one quart of being full. One quart of the preparation constituting the present invention is then poured into the radiator and the engine isallowed to operate for fifteen or twent minutes. During this time the crack in t e engine will be re aired.

A careful check on the action 0 .the composition indicates that after the silicate in the solution becomes heated 'by theaction of the engineflit becomes a hydrated coloidal substance in finely divided particles. These particles have the propertyjjof lodgin in cracks and crevices and accumulating at t ose oints. As the water is constantly circulat- 1ng it prevents these in into large masses and the fact that the sihcate is added while the motor is cold further serves to prevent the formation of masses of the substance. As the silicate lodges in the cracks or crevices the heat of the motor causes said cracks or crevices to gradually enlarge and by the time the motor is hot the cracks and crevices will be completely filled with the deposites. Continued heat of the motor acts to further solidify the itate and this action is accelerated the petroleum carbon black comingled wit the silicate. The oil of bergamot is used only to imparta pleasant odor to the prepara- .jA pplication. filed itiut "2'5; 1930. Serial n... 4 21694.

reciption and is not essential to the action thereof.

This composition can be used for repairing external cracks as well as internal ones, the heat of the engine being sufficient to evaporate moisture from I the composition and insure the proper solidification and binding action.

I The preparation is not recommended for use in radiators but is designed primarily for repairing cracks and filling crevices in engine blocks, cylinder heads and the like.

It is essential that, inlusing this composition, the engine be cold at the time that the composition is placed in the cooling li uid. Otherwise the silicate will coagulate or orm into large masses before it has had time to work into the cracks, etc., during the gradual heating of the engine and opening of the cracks.

What is claimed is: e

A composition of matter for use in the cooling liquid of an internal combustion engine for the purpose of repairing cracks in the engine block and head, consisting of a mixture of sodium or potassium silicate with petroleum carbon black in the proportions of substantially 95% of the silicate and substantially 5% of the petroleum carbon black.

In testimony that we claim the foregoing as our own, we have hereto aifixed our signatures.

JOHN FREDERIOK GUMMING.

particles from f0 Examiner 

